color.c

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/*****************************************************************************
 * ugBASIC - an isomorphic BASIC language compiler for retrocomputers        *
 *****************************************************************************
 * Copyright 2021-2026 Marco Spedaletti (asimov@mclink.it)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *----------------------------------------------------------------------------
 * Concesso in licenza secondo i termini della Licenza Apache, versione 2.0
 * (la "Licenza"); è proibito usare questo file se non in conformità alla
 * Licenza. Una copia della Licenza è disponibile all'indirizzo:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
 * il software distribuito nei termini della Licenza è distribuito
 * "COSÌ COM'È", SENZA GARANZIE O CONDIZIONI DI ALCUN TIPO, esplicite o
 * implicite. Consultare la Licenza per il testo specifico che regola le
 * autorizzazioni e le limitazioni previste dalla medesima.
 ****************************************************************************/
 
/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"

/* <usermanual>
@keyword COLOR
 
@target vz200
</usermanual> */
/* <usermanual>
@keyword COLOUR
 
@target vz200
</usermanual> */
void color( Environment * _environment, int _index, int _shade ) {
 
    Variable * index = variable_temporary( _environment, VT_BYTE, "(index)" );
    Variable * shade = variable_temporary( _environment, VT_BYTE, "(shade)" );
 
    variable_store( _environment, index->name, _index );
    variable_store( _environment, shade->name, _shade );
 
    if ( _index == 0 ) {
        c6847z_border_color( _environment, shade->realName );
        if ( _shade > 0 ) {
            _environment->paletteSelected = 1;
        } else {
            _environment->paletteSelected = 0;
        }
    }
 
    c6847z_background_color( _environment, index->realName, shade->realName );
 
}

void color_semivars( Environment * _environment, int _index, char *_shade ) {
 
    Variable * index = variable_temporary( _environment, VT_BYTE, "(index)" );
    variable_store( _environment, index->name, _index );
 
    Variable * shade = variable_retrieve_or_define( _environment, _shade, VT_COLOR, 0 );
 
    if ( _index == 0 ) {
        c6847z_border_color( _environment, shade->realName );
    }
 
    c6847z_background_color( _environment, index->realName, shade->realName );
 
 
}

void color_vars( Environment * _environment, char *_index, char *_shade ) {
 
    MAKE_LABEL
 
    Variable * index = variable_retrieve_or_define( _environment, _index, VT_BYTE, 0 );
    Variable * shade = variable_retrieve_or_define( _environment, _shade, VT_COLOR, 0 );
 
    cpu_compare_and_branch_8bit_const( _environment, index->realName, 0, label, 0 );
 
    c6847z_border_color( _environment, shade->realName );
 
    cpu_label( _environment, label );
 
    c6847z_background_color( _environment, index->realName, shade->realName );
 
}